ArticleVeterinary sciences2026
Vanillin Improves Antioxidant Capacity, Immunity, and Gut Microbiota in Broilers.
Article in Veterinary sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Wle vanillin is widely used as a flavoring agent in food products, its potential as a non-antibiotic feed additive for broilers remains unexplored. This study primarily investigated the effects of dietary supplementation of vanillin on antioxidant activity, anti-inflammatory response, immune function, and gut microbiota composition in broilers. One-day-old male broilers were randomly assigned to five groups: a basal diet group, a positive control group (basal diet + 100 mg/kg chlortetracycline (CTC)), and three vanillin-supplemented groups (0.1%, 0.2%, or 0.4%) for 42 days. Results showed that vanillin improved antioxidant capacity, with elevated serum superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity and reduced malondialdehyde (MDA) levels. Broilers receiving vanillin supplementation showed lower levels of pro-inflammatory cytokines (interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α)) and higher interleukin-10 (IL-10) expression compared with controls. Additionally, serum immunoglobulin A (IgA) and immunoglobulin M (IgM) levels were also greater in the vanillin group. It also enhanced intestinal health by increasing the duodenal villus height-to-crypt depth ratio, improving intestinal morphology, raising the Firmicutes-to-Bacteroidetes ratio, and promoting
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